Unity coding

Unity Engine
1 
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;

public class Leftbutton : MonoBehaviour,IPointerDownHandler,IPointerUpHandler
{
    // Start is called before the first frame update
  
    bool ispressed =false;
    public GameObject player;
    Public void OnPointerDown(PointerEventData eventdata)
    {
        ispressed=true;
    }
    Public void OnPointerUp(PointerEventData eventdata)
    {
        ispressed=false;
    }

    // Update is called once per frame
    void Update()
    {
      if (ispressed)
      {
          player.Transfrom.Translate(-0.2f,0,0);
      } 
    }
}

ERROR :- Assets\Left button.cs(16,12): error CS1519: Invalid token ‘void’ in class, struct, or interface member declaration

2

them capital "P"s be a bitch

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3

Remember: NOBODY memorizes error codes. The error code is absolutely the least useful part of the error. It serves no purpose at all. Forget the error code. Put it out of your mind.

The complete error message contains everything you need to know to fix the error yourself.

Always start with the FIRST error in the console window, as sometimes that error causes or compounds some or all of the subsequent errors.

The important parts of the error message are:

  • the description of the error itself (google this; you are NEVER the first one!)
  • the file it occurred in (critical!)
  • the line number and character position (the two numbers in parentheses)
  • also possibly useful is the stack trace (all the lines of text in the lower console window)

All of that information is in the actual error message and you must pay attention to it. Learn how to identify it instantly so you don’t have to stop your progress and fiddle around with the forum.

Tutorials and example code are great, but keep this in mind to maximize your success and minimize your frustration:

How to do tutorials properly:

Tutorials are a GREAT idea. Tutorials should be used this way:

Step 1. Follow the tutorial and do every single step of the tutorial 100% precisely the way it is shown. Even the slightest deviation (even a single character!) generally ends in disaster. That’s how software engineering works. Every single letter must be spelled, capitalized, punctuated and spaced (or not spaced) properly. Fortunately this is the easiest part to get right. Be a robot. Don’t make any mistakes. BE PERFECT IN EVERYTHING YOU DO HERE.

If you get any errors, learn how to read the error code and fix it. Google is your friend here. Do NOT continue until you fix the error. The error will probably be somewhere near the parenthesis numbers (line and character position) in the file. It is almost CERTAINLY your typo causing the error, so look again and fix it.

Step 2. Go back and work through every part of the tutorial again, and this time explain it to your doggie. See how I am doing that in my avatar picture? If you have no dog, explain it to your house plant. If you are unable to explain any part of it, STOP. DO NOT PROCEED. Now go learn how that part works. Read the documentation on the functions involved. Go back to the tutorial and try to figure out WHY they did that. This is the part that takes a LOT of time when you are new. It might take days or weeks to work through a single 5-minute tutorial. Stick with it. You will learn.

Step 2 is the part everybody seems to miss. Without Step 2 you are simply a code-typing monkey and outside of the specific tutorial you did, you will be completely lost. If you want to learn, you MUST do Step 2.

Of course, all this presupposes no errors in the tutorial. For certain tutorial makers (like Unity, Brackeys, Imphenzia, Sebastian Lague) this is usually the case. For some other less-well-known content creators, this is less true. Read the comments on the video: did anyone have issues like you did? If there’s an error, you will NEVER be the first guy to find it.

Beyond that, Step 3, 4, 5 and 6 become easy because you already understand!

1 Like
4

I would only add to Kurt’s response that the forums are here for when you get stuck, don’t feel discouraged in using them. There is, however, an appropriate way to do so.

First, search for your issue in the Forums search tool to see if the topic has already been covered.

If not, and this is important, be descriptive of your problem Simply posting the code and the error isn’t helping us to help you.

Your title should also be descriptive, “Unity Coding” is a great example of a terrible title. No offense intended, but nobody knows what you’re actually having issues with until they open the thread and most won’t simply because the Title isn’t descriptive. Furthermore, if your issue was solved here future coders may have an issue finding this because they are not searching for “Unity Coding”, they’re searching for “Error message Invalid Void”.

With that, thank you so much for using the code brackets and Welcome to the forums!

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